Pre-finished Wood Interior & a Maintenance-Free Vinyl Exterior If you’re looking for the best replacement wood and vinyl windows, you need look no further than ProVia’s Aeris Window Series. You will appreciate the carefree nature of our Aeris window design. With designer styling and a full range of popular options, including casement, double hung, awning, bay, bow, sliding and picture windows and other architectural shapes, ProVia’s Aeris Window Series is unsurpassed in its innovative design, beauty and elegance.